Back when threats were less pressing and cards were more polar having the right one meant everything
Perhaps we can hope for a Guardians of the Galaxy-themed Secret Lair drop in the near future
But evasive characters break that stalemate, especially when they quest for two per turn
The Siege enchantments were largely an afterthought
Plus, with all the looting going on you may want to consider cards with Flashback(including, but not limited to Increasing Vengeance, Past in Flames and Seize the Storm) and Madness(including, but not limited to, Avacyn's Judgment and Fiery Temper)
Commander is a casual, social format, so implementing it might not align with the clients core objective